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DC DC converters are power electronic devices used in many applications, from automotive power supplies to consumer electronic devices. TES 2N-4821 models are particularly suitable for use in personal electronics, mobile phones, tablets and other portable devices because of their efficiency, power density and wide input voltage range. In this article, we will discuss its application field and working principle.

Application Field

The TES 2N-4821 is a high-efficiency step-up DC DC converter, which is designed for applications such as portable devices, where space is limited and the power requirements are low. It is a wide input voltage range device, offering efficient solutions for up to 30V input and up to 9V output. The device is also capable of supplying up to 6 amps at a maximum output voltage of 9V, making it a suitable choice for applications such as tablets, smartphones, and other portable consumer electronics. Furthermore, the device is also well suited for applications in the automotive industry; it is able to supply up to 2.5 amps at a maximum output voltage of 15V, making it a suitable choice for vehicle starters, power windows, and other automotive applications.

Working Principle

The TES 2N-4821 is a step-up switching controller, which converts energy from one DC voltage (input) to another (output). The device is based on a boost-type converter, which increases the input voltage with the help of a switching transistor. The energy transfer is accomplished via the following process: When the transistor is on, the current flows from the input voltage source, passes through the switch and then to the output rail, providing an output voltage greater than the input voltage. When the switch is off, the output voltage decreases and there is no current flow between the input and the output.

The TES 2N-4821 utilizes a highly efficient fixed frequency current-mode control technique. This technique ensures that the output voltage remains stable throughout the entire range of input voltage variations. Furthermore, the device includes an internal soft-start circuitry, which limits inrush current and reduces system turn-on time. The device also offers a high level of protection, including output voltage, over-current and over-temperature protection.

In conclusion, the TES 2N-4821 provides an ultra-compact and efficient DC DC solution for applications where space is limited and the power requirements are low. The device enables efficient transfer of energy from a wide range of input voltages to a wide range of output voltages, providing a stable output voltage with a high level of protection. This makes the TES 2N-4821 an ideal choice for applications such as personal electronic devices, tablets, smartphones and other portable devices.

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